[Role of prostate-specific antigen in prostatic carcinoma. Validity of an integrated methodologic approach and...

A series of 72 cases of prostatic carcinoma, together with another of 20 cases of benign prostatic hyperplasia, serum PSA levels of which were available, are investigated, concerning their immunohistochemical responsiveness both to PSA and PAP. Particularly, parameters of 54 cases are statistically correlated, a significant correlation standing out between tumoral "grading" and PSA and PAP immunohistochemical patterns. Moreover, the two markers used show some useful complementary features. Concerning the serum PSA levels, they correlate more significantly with "staging" than with "grading" of the tumors. Then, the biological characterization of prostatic carcinomas, at least in the Authors' experience, should be improved any further if both the serum PSA levels and the PSA and/or PAP immunohistochemical patterns of tumors may be available together.